分布式通信-tcp/ip 广播0 j$ [ x" l5 U% d
# ~9 D2 q# \ E: n+ O服务端 /** * 广播 */public class MulticastServer { public static void main(String[] args) { try { //地址是224.0.0.0 --239.255.255.255 InetAddress group = InetAddress.getByName("225.0.0.0"); MulticastSocket socket = new MulticastSocket(); for(int i=0;i<10;i++){ String data ="hello world"; byte[] bytes = data.getBytes(); socket.send(new DatagramPacket(bytes,bytes.length,group,8888)); System.out.println("send data"); TimeUnit.SECONDS.sleep(2); } } catch (UnknownHostException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } catch (InterruptedException e) { e.printStackTrace(); } }}
# \0 e e. W8 X t$ x- O客户端,可以同时有多个客户端 public class MulticastClient { public static void main(String[] args) { //地址是224.0.0.0 --239.255.255.255 try { InetAddress group = InetAddress.getByName("225.0.0.0"); MulticastSocket socket = new MulticastSocket(8888); socket.joinGroup(group); // 加到指定的組裡面 byte[] buf = new byte[256]; while (true){ DatagramPacket msgPacket = new DatagramPacket(buf, buf.length); //读不到一直处于阻塞状态 socket.receive(msgPacket); System.out.println("receive data"); String msg = new String(msgPacket.getData()); System.out.println("接收到的数据:"+msg); } } catch (UnknownHostException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } }}6 c" `2 b' W5 W0 U2 E- c) m/ }' E
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: u+ Q- R, m4 U) f) v( M' _转载于:https://www.cnblogs.com/newlangwen/p/10383850.html
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